Shrink packaging creates a clean film-wrapped finish for boxes, bottles, bundles, retail packs and multipacks. It is used when businesses want better product presentation, grouped packs or transport-friendly wrapping. The right setup depends on both sealing and shrinking; choosing only the tunnel without checking the sealing process can create poor finish.
This shrink tunnel buying guide is useful for FMCG, cosmetics, pharma, food, bottle, box, stationery, ecommerce and retail product teams comparing L-sealers, side sealers and shrink tunnels.
Measure the product before choosing a machine
Record product length, width, height and weight after the product is ready to wrap. The tunnel opening must comfortably handle the product height and width. Conveyor capacity, heat setting, air flow and film type all affect final shrink quality.
Choose the correct sealing setup
L-sealer with shrink tunnel
An L-sealer with shrink tunnel is useful for many boxes, retail packs, cosmetics, cartons and display packs. It is a practical setup when product size is stable or changes within a manageable range.
Side sealer with shrink tunnel
A side sealer setup can be better for longer products or higher flow applications where continuous sealing is required. It is often considered when output and product length make a basic L-sealer less practical.
Tunnel-only selection
A tunnel-only purchase makes sense only when sealing is already solved. If the product is not sealed properly before entering the tunnel, the final shrink finish will not be consistent.
Film and finish considerations
Film type, film thickness and product shape affect the result. A lightweight retail pack, a multipack bottle bundle and a square box may need different machine settings. Ask your supplier to review product dimensions and film plan before finalizing the setup.
Buying checklist
- ✓Product length, width, height and weight
- ✓Film type and expected finish
- ✓Tunnel opening and conveyor speed
- ✓Sealing method: L-sealer, side sealer or existing sealer
- ✓Available floor space, power supply and operator workflow
Common mistakes to avoid
A common mistake is ignoring product height and tunnel opening. Another is using unsuitable film and expecting the machine to correct the finish. Buyers should also avoid selecting tunnel and sealing machine separately without checking whether the two will work together for the product.
Recommended SC Packaging pages
Compare shrink packaging machines, FQL450A Automatic L-Sealer, FQ-L450A + BS4522LN Shrink Machine, BS4525A Jet Shrink Tunnel and BF450 Side Sealer + Shrink Machine.
FAQs
Do I need an L-sealer with a shrink tunnel?
If your product is not already sealed in shrink film, you usually need a sealing setup before the tunnel. The right setup depends on product size and output.
Which products use shrink tunnels?
Common applications include boxes, bottles, multipacks, cosmetics, pharma packs, retail display packs and bundle packaging.
What details are needed for a shrink tunnel quote?
Share product dimensions, photos, film type, output requirement, power availability and whether sealing is already arranged.
Get shrink machine selection help
Send product size, photos, required finish and expected output. SC Packaging can suggest a suitable shrink packaging setup.